The alcolock is a technical device that is connected to the vehicle ignition system. Before starting the car, the driver must blow into a mouthpiece to check the air exhaled. If this contains alcohol equal to or more than the legal limit, a BAC of 0.2, it will not be possible to start the engine. Alcolocks are used today for quality assurance purposes and are linked to DWI offences.

Alcolock as quality assurance

Companies use alcolocks in their endeavours to quality-assure their transports. Thanks to the alcolock, companies can guarantee that the transport drivers they employ are sober behind the wheel.

Alcolock for DWI offenders

Anyone suspected of DWI may apply to participate in an alcohol ignition interlock programme instead of losing their driving licence. One of the requirements placed on those taking part is that they must blow into the device at random intervals during the course of a journey. Any trace of alcohol found in the exhaled air is registered in the alcolock memory function.